If you think the book might be right for Dad, History Author Show listeners can enjoy a free sample chapter of The Winter Fortressright here. Meet the Norwegian patriots — from schoolteachers to plumbers — who dared defy the Nazis, and endured starvation and harsh winter conditions, to deny Hitler the power to rain nuclear fire on London, New York, and other Allied cities.

You can follow today’s guest on Twitter @NealBascomb, like him at Facebook.com/NealRBascomb, and pay him a visit at NealBascomb.com. So put on your winter camouflage suits, wax up your skis, let’s head back to Nazi-occupied Norway and assault, The Winter Fortress…